0102030405
China XGN (XGTD5)-(12, 240.5 Indoor Gas Insulation Metal-clad Switchgear - Trusted Suppliers & Factory
General
The product has features of flexible combinations, great safety, complete interlocking logic as well as extendibility, miniaturization and free for maintenance. So that it was commonly used in infrastructure construction for power station, power substation, movable transformer pack, rail traffic, buildings that have the 35kV or below nominal voltage. Especially for some severe environment like high altitude, heavy pollution and high humidity. The product quality assurance is based on researching, developing designing and producing required by quality system and continues to improve. So it is completely complying with the newest version or revised version of following standard, but not limited to them.
Service conditions
- a. Ambient temperature: -45 ℃ ~ +40 ℃, the daily average value shall not exceed 35 ℃;
- b. Altitude: < 5000m above the sea level;
- c. Relative humidity: Daily average < 95%, Monthly average is < 90%;
- d. Seismic grade: the seismic intensity shall not exceed grade 8;
- e. Inductive electromagnetic interference value of secondary system: not more than 1.6 KV.
Note: If the service environment exceeds the above conditions, please consult with our company.
Technical Parameter
Main technical parameters of switchgear| Item | Unit | Parameters | |||
|---|---|---|---|---|---|
| Rated voltage | kV | 12 | 24 | 40.5 | |
| Rated current | A | 630/1250/1600/2000/2500/3150 | |||
| Rated frequency | Hz | 50/60 | |||
| 1 min Rated power frequency withstand voltage (RMS) | Phase to Phase / Phase to earth | kV | 42 | 65 | 95 |
| Insulation Distance | 48 | 79 | 118 | ||
| Rated Lightning impulse withstand voltage (peak) | Phase to Phase / Phase to earth | kV | 75 | 125 | 185 |
| Insulation Distance | 85 | 145 | 215 | ||
| Rated power frequency withstand voltage of auxiliary circuit | kV | 2 | |||
| Rated short-circuit breaking current (RMS) | kA | 20/25/31.5/40 | |||
| Rated short-circuit making current (peak) | kA | 50/63/80/100 | |||
| Rated short-time withstand current (4s) | kA | 20/25/31.5/40 | |||
| Rated peak withstand current | kA | 50/63/80/100 | |||
| Main circuit resistance of each phase | μΩ | Rated current ≤ 1600A, Rc ≤ 220; Rated current ≥ 2000A, Rc ≤ 105 | |||
| Rated voltage of auxiliary and control circuit | V | DC110/220, AC220 | |||
| Rated SF6 gas pressure (20℃) | MPa | 0.04/0.05 | |||
| Min SF6 gas pressure (20℃) | MPa | 0.03 | |||
| Annual SF6 gas loss rate | ‰ | ≤5 | |||
| Degree of Protection | / | HV compartment IP67; LV compartment IP4X | |||
| Weight | Kg | 1000~1600 | |||
| Item | Unit | Parameters | |||
|---|---|---|---|---|---|
| Rated voltage | kV | 12 | 24 | 40.5 | |
| Rated current | A | 630/1250/1600/2000/2500/3150 | |||
| Rated frequency | Hz | 50/60 | |||
| 1 min Rated power frequency withstand voltage (RMS) | Phase to Phase / Phase to earth | kV | 42 | 65 | 95 |
| Insulation Distance | 48 | 79 | 118 | ||
| Rated Lightning impulse withstand voltage (peak) | Phase to Phase / Phase to earth | kV | 75 | 125 | 185 |
| Insulation Distance | 85 | 145 | 215 | ||
| Rated short-circuit breaking current (RMS) | kA | 20/25/31.5/40 | |||
| Rated short-circuit making current (peak) | kA | 50/63/80/100 | |||
| Rated short-time withstand current (4S) | kA | 20/25/31.5/40 | |||
| Rated peak withstand current | kA | 50/63/80/100 | |||
| Mechanical life | Times | 10000 | |||
| Rated operating sequence | / | 0-0.3s-CO-3min-CO | |||
| Clearance between open contacts | mm | 9±1 | 13±1 | 18±1 | |
| Contact touching range | mm | 3±0.5 | 3±0.5 | 3±0.5 | |
| Contact closing bounce time | ms | ≤2 | |||
| Three-phase closing & opening asynchrony | ms | ≤2 | |||
| Average opening speed (at the initial 75% opening distance) | m/s | 0.8~1.4 | 1.2~1.6 | 1.2~1.8 | |
| Average closing speed (at the initial 75% opening distance) | m/s | 0.4~0.8 | 0.5~0.9 | 0.8~1.2 | |
| Opening time | ms | 35±10 | |||
| Closing time | ms | 50±10 | |||
| Rebound amplitude of opening contact | mm | ≤2 | |||
| Main circuit resistance of each phase | μΩ | ≤25 | |||
| Energy storage time of closing spring | S | ≤15 | |||
Note: The above insulation levels are reference values at the rated working pressure of the insulating gas.
Structure
Figure 1 Typical structure of circuit breaker cabinet
(Bus top connection - cables input & output and outer cone bushing)
A. Bus panel | B. Meter panel | C. Circuit breaker panel | D. Cable panel | E. Mechanism panel
(Bus top connection - cables input & output and outer cone bushing)
A. Bus panel | B. Meter panel | C. Circuit breaker panel | D. Cable panel | E. Mechanism panel
- 1. Front panel
- 2. Framework
- 3. Back panel
- 4. HV cable (user prepare)
- 5. Back plug type lightning arrester
- 6. CT (ring core type)
- 7. Extended outer cone bushing
- 8. Vacuum circuit breaker
- 9. Outer cone bushing
- 10. Gas tank
- 11. Branch bus
- 12. Pressure release device for circuit breaker panel
- 13. Three position switch operating mechanism
- 14. Gas density relay
- 15. Three position DS/ES
- 16. Secondary unit panel
- 17. Top connection outer cone bushing
- 18. Pressure release device for bus panel
- 19. Top connection main bus
Figure 2 Typical structure of circuit breaker cabinet
(Bus side connection - cable input & output and inner cone bushing)
A. Bus panel | B. Meter panel | C. Circuit breaker panel | D. Cable panel | E. Mechanism panel
(Bus side connection - cable input & output and inner cone bushing)
A. Bus panel | B. Meter panel | C. Circuit breaker panel | D. Cable panel | E. Mechanism panel
- 1. Front panel
- 2. Framework
- 3. HV cable (user prepare)
- 4. Lightning arrester
- 5. CT
- 6. HV charged display
- 7. 2# Inner cone outlet
- 8. 3# inner cone outlet
- 9. CT (built-in type)
- 10. Vacuum circuit breaker
- 11. Gas tank
- 12. Branch bus
- 13. Three position switch operating mechanism
- 14. Gas density relay
- 15. Pressure release device for vacuum circuit breaker panel
- 16. Three position DS/ES
- 17. Secondary components front-panel
- 18. Main bus and side connection inner cone bushing
- 19. Pressure relief device for bus panel
Frequently Asked Questions (FAQ)
Q1: What are the primary applications of this switchgear?
A1: This switchgear is widely used in infrastructure projects including power stations, power substations, mobile transformer packs, rail transit, and buildings with a nominal voltage of 35kV or below. It is highly suitable for severe environments with high altitude, heavy pollution, and high humidity.
Q2: Under what environmental limits can this equipment operate safely?
A2: The standard operating conditions require an ambient temperature of -45 ℃ to +40 ℃ (daily average ≤ 35 ℃), relative daily average humidity < 95% (monthly average < 90%), seismic intensity not exceeding grade 8, and an altitude below 5000m. For environments exceeding these limits, please contact us for customized designs.
Q3: What is the degree of protection (IP Rating) of the compartments?
A3: The switchgear features high safety compartmentation, with the High Voltage (HV) compartment rated at IP67 and the Low Voltage (LV) compartment rated at IP4X.
Q4: What is the mechanical life expectancy of the vacuum circuit breaker?
A4: The vacuum circuit breaker is designed for a mechanical life of up to 10,000 operations under standard operating sequences (0-0.3s-CO-3min-CO).
Q5: What is the annual SF6 gas leakage rate of this switchgear?
A5: The annual SF6 gas loss rate is strictly controlled to be less than or equal to 5‰ at the rated gas pressure of 0.04/0.05 MPa (20℃).